Insulated lay-in diffuser

Abstract

An insulated lay-in diffuser comprising a housing having a shaped surface including a substantially centrally disposed collar and terminating at a mounting flange, and insulation material positioned on the shaped surface and extending between the collar and flange of the housing.

What is claimed is: 
     
       1. A diffuser means for interfacing a duct with an area to be serviced by the duct, the diffuser means comprising: (a) a housing having a shaped, contoured surface and including a substantially centrally disposed collar for engaging portions of the duct and terminating edge portions for interfacing with the area to be serviced;   (b) insulation means positioned on the shaped surface and extending between the collar and the terminating edge portions of the housing;   (c) wherein the contoured surface is a curvilinear surface including at least one node point located intermediate the collar and the terminating edge portions of the housing;   (d) spacing plate means interposed between the shaped surface and the insulation means for spacing the insulation means from the shaped surface; and   (e) the spacing plate means includes a base adapted for location over the shaped surface, and protrusions extending from the base and capable of engaging the insulation means, thereby forming an air space between the base of the spacing plate means and the insulation means.   
     
     
       2. A diffuser means for interfacing a duct with an area to be serviced by the duct, the diffuser means comprising: (a) a housing having a shaped, contoured surface and including a substantially centrally disposed collar for engaging portions of the duct and terminating edge portions for interfacing with the area to be serviced;   (b) insulation means positioned on the shaped surface and extending between the collar and the terminating edge portions of the housing;   (c) wherein the contoured surface is a curvilinear surface including at least one node point located intermediate the collar and ther terminating edge portions of the housing;   (d) the shaped surface and the insulation means meet at the node point, so that air spaces are developed between other portions of the shaped surface and the insulation means; and   (e) the shaped surface forms at least one other node point, and further comprising plate means attached to and extending between the other node point and portions of the housing adjacent the collar, thereby forming an additional air space between the plate means and the node point which meets the insulation means.   
     
     
       3. A diffuser means for interfacing a duct with an area to be serviced by the duct, the diffuser means comprising: (a) a housing having a shaped, contoured surface and including a substantially centrally disposed collar for engaging portions of the duct and terminating edge portions for interfacing with the area to be serviced;   (b) insulation means positioned on the shaped surface and extending between the collar and the terminating edge portions of the housing;   (c) wherein the contoured surface in curvilinear surface including at least one node point located intermediate the collar and the terminating edge portions of the housing;   (d) spacing plate means interposed between the shaped surface and the insulation means for spacing the insulation means from the shaped surface; and   (e) the spacing plate means includes a base adapted for location over the node point of the shaped surface, and protrusions extending from the base and capable of engaging the insulation means, thereby forming an air space between the shaped surface and the base of the spacing plate means, and the base of the spacing plate means and the insulation means.